The Prince of Wales unveils Earthshot prize finalists

The Prince of Wales has unveiled the finalists for the second annual Earthshot prize. Two of the fifteen finalists are from the UK, and are in the running to receive a £1 million prize award. Finalists are nominated in five categories: climate, oceans, waste, air and nature. The Prince & Princess of Wales will attend the awards ceremony in Boston, in the US on December 2.